Pike v8.0 release 509 running Hilfe v3.5 (Incremental Pike Frontend)
Crypto.SHA256.HMAC("a")("b");
(1) Result: "\b\336""2\231""1\342\225h7v\252\232CR\233\320\262u(m\363\26\3\0\304\233\244\350A\203""0\23"
Crypto.SHA256.HMAC("a",32)("b");
(2) Result: "\av\242\236\370\215K@N\230/h\351\236\236\254v\320\370\270""2\17\231[\202xb+i\222\3 "
Pike v8.1 release 11 running Hilfe v3.5 (Incremental Pike Frontend)
Crypto.SHA256.HMAC("a")("b");
(1) Result: "\b\336""2\231""1\342\225h7v\252\232CR\233\320\262u(m\363\26\3\0\304\233\244\350A\203""0\23"
Crypto.SHA256.HMAC("a",32)("b");
(2) Result: "\b\336""2\231""1\342\225h7v\252\232CR\233\320\262u(m\363\26\3\0\304\233\244\350A\203""0\23"
They can't both be right. Any ideas? I tried to debug it, but got lost in the multitude of Nettle inheritance-spaghetti levels.